# Audio checks
Source: https://docs.aden.space/docs/help/your-music/audio-analysis

Read your tempo and key, shape playback with an EQ, check mono, and get notes on your mix.
Aden listens to every version you upload and gives you tools to hear it better. Most checks run in your browser, so nothing extra is uploaded.

<Cards>
  <Card title="Get BPM and key" href="/docs/help/your-music/audio-analysis/bpm-and-key">
    Tempo, key and length, read for you.
  </Card>

  <Card title="Shape playback with the EQ" href="/docs/help/your-music/audio-analysis/eq">
    Boost or cut while it plays, and attach it to a comment.
  </Card>

  <Card title="Check your mix in mono" href="/docs/help/your-music/audio-analysis/mono-check">
    See what a club or phone speaker loses.
  </Card>

  <Card title="Get feedback on your mix" href="/docs/help/your-music/audio-analysis/track-feedback">
    Notes on low end, drums, stereo and loudness.
  </Card>
</Cards>

To hear two versions side by side, see [Compare versions](/docs/help/your-music/versions/compare-versions).